Beer is a very popular fermented drink nowadays, and it has a long history, dating back to ancient Egypt.Beer brewing is relatively simple, with plenty of ingredients and a good taste. Until now, beer has a large number of fans all over the world.When we buy beer, we usually find that there are two kinds of beer, one is in glass bottle, and the other is in cans. So they are also beer. What's the difference?After reading it, you will understand completely.